This is the one page to start on for anything battery-related — chemistry basics, charging, maintenance, and troubleshooting. If you have a Victron or a Progressive Dynamics/WFCO/Xantrex system and need specific fault co...
Active corridor: Montana · Wyoming · Idaho · Washington — case-by-case beyond.
This is the one page to start on for anything battery-related — chemistry basics, charging, maintenance, and troubleshooting. If you have a Victron or a Progressive Dynamics/WFCO/Xantrex system and need specific fault codes, this page will point you to the right reference. This page covers general battery chemistry, charging, maintenance, and capacity testing that applies no matter what brand you have. For specific fault codes and error messages, jump to the brand reference: Victron MultiPlus/Quattro/SmartSolar ...
The single biggest mistake in RV battery systems is treating lithium (LiFePO4), AGM, and flooded lead-acid as interchangeable. They have different charge voltages, different discharge tolerances, and different mainten...
— On lithium: a BMS protection trip from a deep discharge, over-temperature, or cell imbalance is far more common than a truly dead battery — On lead-acid/AGM: sulfation from repeated deep discharge or long storage wi...
Resting voltage alone doesn’t tell you much — a battery can read a normal resting voltage and still be unable to hold capacity under load. A proper capacity test is the only way to know for sure.
— Lithium batteries store best around 50–60% state of charge, not full — storing at 100% for months accelerates capacity loss — Lead-acid/AGM batteries should be stored fully charged and kept on a maintenance/float ch...
— Partial panel shading (a vent, AC unit, or antenna shadow) can drop output far more than the shaded area alone would suggest, especially on non-optimized arrays — Charge controller in the wrong mode or with the wron...
— Low-voltage shutdown: battery voltage sagged under load, often from undersized cabling or a battery bank that’s smaller than the load demands — Overload shutdown: total connected load exceeded the inverter’s rated c...
Related: Victron services · Lithium buying guide · Power budget
Trip fee $75 within 30 miles, then $1.50/mi. Labor ~$150/hr (1-hour minimum, billed in 30-minute increments). Diagnostic $150 applied toward repair if you proceed.
Active corridor: Montana · Wyoming · Idaho · Washington — case-by-case beyond. Credentials (text): Victron Professional Certified Installer · weBoost Authorized Installer · Peplink Certified Associate · Dometic Professional Certified.
